condition	mean	min	max
4 h after light	6.682119999999999	6.53618	6.895289999999999
8 h after light	7.457143333333334	7.2920300000000005	7.679860000000001
12 h after light	6.82431	6.7053199999999995	7.049460000000001
4 h after dark	6.722333333333333	6.69839	6.73665
8 h after dark	6.615703333333333	6.40602	6.90304
12 h after dark	6.329303333333333	6.130319999999999	6.53041